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authorHarald Welte <laforge@gnumonks.org>2019-03-18 18:27:00 +0100
committerHarald Welte <laforge@gnumonks.org>2019-04-03 18:03:14 +0200
commit4a62eda225ab7f3c9556990c81a6fc5e19b5eec8 (patch)
tree5eab6ad641d4411ff31a15a51f6d0c14bccdb6f3 /src/gsm
parent98ed3393cdfdf35ad0bb79f454474f2b27bf3d56 (diff)
Add _buf() functions to bypass static string buffers
We have a number of static buffers in use in libosmo*. This means the related functions are not usable in a thread-safe way. While we so far don't have many multi-threaded programs in the osmocom universe, the static buffers also prevent us from calling the same e.g. string-ify function twice within a single printf() call. Let's make sure there's an alternative function in all those cases, where the user can pass in a caller-allocated buffer + size, and make the 'classic' function with the static buffer a wrapper around that _buf() variant. Change-Id: Ibf85f79e93244f53b2684ff6f1095c5b41203e05
Diffstat (limited to 'src/gsm')
-rw-r--r--src/gsm/abis_nm.c13
-rw-r--r--src/gsm/apn.c27
-rw-r--r--src/gsm/gsm0808_utils.c40
-rw-r--r--src/gsm/gsm23003.c101
-rw-r--r--src/gsm/gsm48.c92
-rw-r--r--src/gsm/gsm_utils.c13
-rw-r--r--src/gsm/libosmogsm.map18
-rw-r--r--src/gsm/rsl.c40
8 files changed, 267 insertions, 77 deletions
diff --git a/src/gsm/abis_nm.c b/src/gsm/abis_nm.c
index 49d05ba5..e25fdd03 100644
--- a/src/gsm/abis_nm.c
+++ b/src/gsm/abis_nm.c
@@ -928,14 +928,19 @@ enum gsm_phys_chan_config abis_nm_pchan4chcomb(uint8_t chcomb)
return GSM_PCHAN_NONE;
}
-const char *abis_nm_dump_foh(const struct abis_om_fom_hdr *foh)
+char *abis_nm_dump_foh_buf(char *buf, size_t buf_len, const struct abis_om_fom_hdr *foh)
{
- static char foh_buf[128];
- snprintf(foh_buf, sizeof(foh_buf), "OC=%s(%02x) INST=(%02x,%02x,%02x)",
+ snprintf(buf, buf_len, "OC=%s(%02x) INST=(%02x,%02x,%02x)",
get_value_string(abis_nm_obj_class_names, foh->obj_class),
foh->obj_class, foh->obj_inst.bts_nr, foh->obj_inst.trx_nr,
foh->obj_inst.ts_nr);
- return foh_buf;
+ return buf;
+}
+
+const char *abis_nm_dump_foh(const struct abis_om_fom_hdr *foh)
+{
+ static char foh_buf[128];
+ return abis_nm_dump_foh_buf(foh_buf, sizeof(foh_buf), foh);
}
/* this is just for compatibility reasons, it is now a macro */
diff --git a/src/gsm/apn.c b/src/gsm/apn.c
index 26746631..4ab370c5 100644
--- a/src/gsm/apn.c
+++ b/src/gsm/apn.c
@@ -32,17 +32,22 @@
static char apn_strbuf[APN_MAXLEN+1];
-char *osmo_apn_qualify(unsigned int mcc, unsigned int mnc, const char *ni)
+char *osmo_apn_qualify_buf(char *buf, size_t buf_len, unsigned int mcc, unsigned int mnc, const char *ni)
{
- snprintf(apn_strbuf, sizeof(apn_strbuf)-1, APN_GPRS_FMT,
- ni, mnc, mcc);
- apn_strbuf[sizeof(apn_strbuf)-1] = '\0';
+ snprintf(buf, buf_len-1, APN_GPRS_FMT, ni, mnc, mcc);
+ buf[buf_len-1] = '\0';
- return apn_strbuf;
+ return buf;
}
-char *osmo_apn_qualify_from_imsi(const char *imsi,
- const char *ni, int have_3dig_mnc)
+char *osmo_apn_qualify(unsigned int mcc, unsigned int mnc, const char *ni)
+{
+ return osmo_apn_qualify_buf(apn_strbuf, sizeof(apn_strbuf), mcc, mnc, ni);
+}
+
+
+char *osmo_apn_qualify_from_imsi_buf(char *buf, size_t buf_len, const char *imsi,
+ const char *ni, int have_3dig_mnc)
{
char cbuf[3+1], nbuf[3+1];
@@ -56,7 +61,13 @@ char *osmo_apn_qualify_from_imsi(const char *imsi,
strncpy(nbuf, imsi+3, 2);
nbuf[2] = '\0';
}
- return osmo_apn_qualify(atoi(cbuf), atoi(nbuf), ni);
+ return osmo_apn_qualify_buf(buf, buf_len, atoi(cbuf), atoi(nbuf), ni);
+}
+
+char *osmo_apn_qualify_from_imsi(const char *imsi,
+ const char *ni, int have_3dig_mnc)
+{
+ return osmo_apn_qualify_from_imsi_buf(apn_strbuf, sizeof(apn_strbuf), imsi, ni, have_3dig_mnc);
}
/**
diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c
index e0cdaaf6..52e46743 100644
--- a/src/gsm/gsm0808_utils.c
+++ b/src/gsm/gsm0808_utils.c
@@ -595,11 +595,13 @@ int gsm0808_dec_lcls(struct osmo_lcls *lcls, const struct tlv_parsed *tp)
static char dbuf[256];
/*! Dump LCLS parameters (GCR excluded) into string for printing.
+ * \param[out] buf caller-allocated output string buffer
+ * \param[in] buf_len size of buf in bytes
* \param[in] lcls pointer to the struct to print.
* \returns string representation of LCLS or NULL on error. */
-char *osmo_lcls_dump(const struct osmo_lcls *lcls)
+char *osmo_lcls_dump_buf(char *buf, size_t buf_len, const struct osmo_lcls *lcls)
{
- struct osmo_strbuf s = { .buf = dbuf, .len = 256 };
+ struct osmo_strbuf s = { .buf = buf, .len = buf_len };
if (!lcls)
return NULL;
@@ -612,12 +614,22 @@ char *osmo_lcls_dump(const struct osmo_lcls *lcls)
return dbuf;
}
+/*! Dump LCLS parameters (GCR excluded) into static string buffer for printing.
+ * \param[in] lcls pointer to the struct to print.
+ * \returns string representation of LCLS in static buffer or NULL on error. */
+char *osmo_lcls_dump(const struct osmo_lcls *lcls)
+{
+ return osmo_lcls_dump_buf(dbuf, sizeof(dbuf), lcls);
+}
+
/*! Dump GCR struct into string for printing.
+ * \param[out] buf caller-allocated output string buffer
+ * \param[in] buf_len size of buf in bytes
* \param[in] lcls pointer to the struct to print.
* \returns string representation of GCR or NULL on error. */
-char *osmo_gcr_dump(const struct osmo_lcls *lcls)
+char *osmo_gcr_dump_buf(char *buf, size_t buf_len, const struct osmo_lcls *lcls)
{
- struct osmo_strbuf s = { .buf = dbuf, .len = 256 };
+ struct osmo_strbuf s = { .buf = buf, .len = buf_len };
if (!lcls)
return NULL;
@@ -631,6 +643,15 @@ char *osmo_gcr_dump(const struct osmo_lcls *lcls)
return dbuf;
}
+/*! Dump GCR struct into static string buffer for printing.
+ * \param[in] lcls pointer to the struct to print.
+ * \returns string representation of GCR in static buffer or NULL on error. */
+char *osmo_gcr_dump(const struct osmo_lcls *lcls)
+{
+ return osmo_gcr_dump_buf(dbuf, sizeof(dbuf), lcls);
+}
+
+
/*! Encode TS 08.08 Encryption Information IE
* \param[out] msg Message Buffer to which IE is to be appended
* \param[in] ei Encryption Information to be encoded
@@ -1838,13 +1859,18 @@ const char *gsm0808_cell_id_list_name(const struct gsm0808_cell_id_list2 *cil)
#undef APPEND_STR
#undef APPEND_CELL_ID_U
-const char *gsm0808_channel_type_name(const struct gsm0808_channel_type *ct)
+char *gsm0808_channel_type_name_buf(char *buf, size_t buf_len, const struct gsm0808_channel_type *ct)
{
- static char buf[128];
- snprintf(buf, sizeof(buf), "ch_indctr=0x%x ch_rate_type=0x%x perm_spch=%s",
+ snprintf(buf, buf_len, "ch_indctr=0x%x ch_rate_type=0x%x perm_spch=%s",
ct->ch_indctr, ct->ch_rate_type,
osmo_hexdump(ct->perm_spch, ct->perm_spch_len));
return buf;
}
+const char *gsm0808_channel_type_name(const struct gsm0808_channel_type *ct)
+{
+ static char buf[128];
+ return gsm0808_channel_type_name_buf(buf, sizeof(buf), ct);
+}
+
/*! @} */
diff --git a/src/gsm/gsm23003.c b/src/gsm/gsm23003.c
index 720c09b6..bbfe236a 100644
--- a/src/gsm/gsm23003.c
+++ b/src/gsm/gsm23003.c
@@ -90,13 +90,37 @@ bool osmo_imei_str_valid(const char *imei, bool with_15th_digit)
}
/*! Return MCC string as standardized 3-digit with leading zeros.
+ * \param[out] buf caller-allocated output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] mcc MCC value.
+ * \returns string in user-supplied output buffer
+ */
+char *osmo_mcc_name_buf(char *buf, size_t buf_len, uint16_t mcc)
+{
+ snprintf(buf, buf_len, "%03u", mcc);
+ return buf;
+}
+
+/*! Return MCC string as standardized 3-digit with leading zeros.
* \param[in] mcc MCC value.
* \returns string in static buffer.
*/
const char *osmo_mcc_name(uint16_t mcc)
{
static char buf[8];
- snprintf(buf, sizeof(buf), "%03u", mcc);
+ return osmo_mcc_name_buf(buf, sizeof(buf), mcc);
+}
+
+/*! Return MNC string as standardized 2- or 3-digit with leading zeros.
+ * \param[out] buf caller-allocated output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] mnc MNC value.
+ * \param[in] mnc_3_digits True if an MNC should fill three digits, only has an effect if MNC < 100.
+ * \returns string in static buffer.
+ */
+char *osmo_mnc_name_buf(char *buf, size_t buf_len, uint16_t mnc, bool mnc_3_digits)
+{
+ snprintf(buf, buf_len, "%0*u", mnc_3_digits ? 3 : 2, mnc);
return buf;
}
@@ -108,14 +132,21 @@ const char *osmo_mcc_name(uint16_t mcc)
const char *osmo_mnc_name(uint16_t mnc, bool mnc_3_digits)
{
static char buf[8];
- snprintf(buf, sizeof(buf), "%0*u", mnc_3_digits ? 3 : 2, mnc);
- return buf;
+ return osmo_mnc_name_buf(buf, sizeof(buf), mnc, mnc_3_digits);
}
-static inline void plmn_name(char *buf, size_t buflen, const struct osmo_plmn_id *plmn)
+/*! Return MCC-MNC string as standardized 3-digit-dash-2/3-digit with leading zeros.
+ * \param[out] buf caller-allocated output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] plmn MCC-MNC value.
+ * \returns string in static buffer.
+ */
+char *osmo_plmn_name_buf(char *buf, size_t buf_len, const struct osmo_plmn_id *plmn)
{
- snprintf(buf, buflen, "%s-%s", osmo_mcc_name(plmn->mcc),
- osmo_mnc_name(plmn->mnc, plmn->mnc_3_digits));
+ char mcc[8], mnc[8];
+ snprintf(buf, buf_len, "%s-%s", osmo_mcc_name_buf(mcc, sizeof(mcc), plmn->mcc),
+ osmo_mnc_name_buf(mnc, sizeof(mnc), plmn->mnc, plmn->mnc_3_digits));
+ return buf;
}
/*! Return MCC-MNC string as standardized 3-digit-dash-2/3-digit with leading zeros.
@@ -125,10 +156,10 @@ static inline void plmn_name(char *buf, size_t buflen, const struct osmo_plmn_id
const char *osmo_plmn_name(const struct osmo_plmn_id *plmn)
{
static char buf[16];
- plmn_name(buf, sizeof(buf), plmn);
- return buf;
+ return osmo_plmn_name_buf(buf, sizeof(buf), plmn);
}
+
/*! Same as osmo_plmn_name(), but returning in a different static buffer.
* \param[in] plmn MCC-MNC value.
* \returns string in static buffer.
@@ -136,7 +167,19 @@ const char *osmo_plmn_name(const struct osmo_plmn_id *plmn)
const char *osmo_plmn_name2(const struct osmo_plmn_id *plmn)
{
static char buf[16];
- plmn_name(buf, sizeof(buf), plmn);
+ return osmo_plmn_name_buf(buf, sizeof(buf), plmn);
+}
+
+/*! Return MCC-MNC-LAC as string, in caller-provided output buffer.
+ * \param[out] buf caller-allocated output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] lai LAI to encode, the rac member is ignored.
+ * \returns buf
+ */
+char *osmo_lai_name_buf(char *buf, size_t buf_len, const struct osmo_location_area_id *lai)
+{
+ char plmn[16];
+ snprintf(buf, buf_len, "%s-%u", osmo_plmn_name_buf(plmn, sizeof(plmn), &lai->plmn), lai->lac);
return buf;
}
@@ -147,13 +190,18 @@ const char *osmo_plmn_name2(const struct osmo_plmn_id *plmn)
const char *osmo_lai_name(const struct osmo_location_area_id *lai)
{
static char buf[32];
- snprintf(buf, sizeof(buf), "%s-%u", osmo_plmn_name(&lai->plmn), lai->lac);
- return buf;
+ return osmo_lai_name_buf(buf, sizeof(buf), lai);
}
-static const char *_cgi_name(const struct osmo_cell_global_id *cgi, char *buf, size_t buflen)
+/*! Return MCC-MNC-LAC-CI as string, in caller-provided output buffer.
+ * \param[out] buf caller-allocated output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] cgi CGI to encode.
+ * \returns buf
+ */
+char *osmo_cgi_name_buf(char *buf, size_t buf_len, const struct osmo_cell_global_id *cgi)
{
- snprintf(buf, buflen, "%s-%u", osmo_lai_name(&cgi->lai), cgi->cell_identity);
+ snprintf(buf, buf_len, "%s-%u", osmo_lai_name(&cgi->lai), cgi->cell_identity);
return buf;
}
@@ -164,7 +212,7 @@ static const char *_cgi_name(const struct osmo_cell_global_id *cgi, char *buf, s
const char *osmo_cgi_name(const struct osmo_cell_global_id *cgi)
{
static char buf[32];
- return _cgi_name(cgi, buf, sizeof(buf));
+ return osmo_cgi_name_buf(buf, sizeof(buf), cgi);
}
/*! Same as osmo_cgi_name(), but uses a different static buffer.
@@ -175,7 +223,7 @@ const char *osmo_cgi_name(const struct osmo_cell_global_id *cgi)
const char *osmo_cgi_name2(const struct osmo_cell_global_id *cgi)
{
static char buf[32];
- return _cgi_name(cgi, buf, sizeof(buf));
+ return osmo_cgi_name_buf(buf, sizeof(buf), cgi);
}
static void to_bcd(uint8_t *bcd, uint16_t val)
@@ -187,14 +235,31 @@ static void to_bcd(uint8_t *bcd, uint16_t val)
bcd[0] = val % 10;
}
-const char *osmo_gummei_name(const struct osmo_gummei *gummei)
+/*! Return string representation of GUMMEI in caller-provided output buffer.
+ * \param[out] buf pointer to caller-provided output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] gummei GUMMEI to be stringified
+ * \returns buf
+ */
+char *osmo_gummei_name_buf(char *buf, size_t buf_len, const struct osmo_gummei *gummei)
{
- static char buf[32];
- snprintf(buf, sizeof(buf), "%s-%04x-%02x", osmo_plmn_name(&gummei->plmn),
+ char plmn[16];
+ snprintf(buf, buf_len, "%s-%04x-%02x", osmo_plmn_name_buf(plmn, sizeof(plmn), &gummei->plmn),
gummei->mme.group_id, gummei->mme.code);
return buf;
}
+/*! Return string representation of GUMMEI in static output buffer.
+ * \param[in] gummei GUMMEI to be stringified
+ * \returns pointer to static output buffer
+ */
+const char *osmo_gummei_name(const struct osmo_gummei *gummei)
+{
+ static char buf[32];
+ return osmo_gummei_name_buf(buf, sizeof(buf), gummei);
+}
+
+
/* Convert MCC + MNC to BCD representation
* \param[out] bcd_dst caller-allocated memory for output
* \param[in] mcc Mobile Country Code
diff --git a/src/gsm/gsm48.c b/src/gsm/gsm48.c
index 5dc30ad0..a45d67bc 100644
--- a/src/gsm/gsm48.c
+++ b/src/gsm/gsm48.c
@@ -182,6 +182,20 @@ const char *rr_cause_name(uint8_t cause)
return get_value_string(rr_cause_names, cause);
}
+/*! Return MCC-MNC-LAC-RAC as string, in a caller-provided output buffer.
+ * \param[out] buf caller-provided output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] rai RAI to encode.
+ * \returns buf
+ */
+char *osmo_rai_name_buf(char *buf, size_t buf_len, const struct gprs_ra_id *rai)
+{
+ snprintf(buf, buf_len, "%s-%s-%u-%u",
+ osmo_mcc_name(rai->mcc), osmo_mnc_name(rai->mnc, rai->mnc_3_digits), rai->lac,
+ rai->rac);
+ return buf;
+}
+
/*! Return MCC-MNC-LAC-RAC as string, in a static buffer.
* \param[in] rai RAI to encode.
* \returns Static string buffer.
@@ -189,10 +203,7 @@ const char *rr_cause_name(uint8_t cause)
const char *osmo_rai_name(const struct gprs_ra_id *rai)
{
static char buf[32];
- snprintf(buf, sizeof(buf), "%s-%s-%u-%u",
- osmo_mcc_name(rai->mcc), osmo_mnc_name(rai->mnc, rai->mnc_3_digits), rai->lac,
- rai->rac);
- return buf;
+ return osmo_rai_name_buf(buf, sizeof(buf), rai);
}
/* FIXME: convert to value_string */
@@ -433,14 +444,15 @@ const char *gsm48_mi_type_name(uint8_t mi)
return get_value_string(mi_type_names, mi);
}
-/*! Return a human readable representation of a Mobile Identity in static buffer.
+/*! Return a human readable representation of a Mobile Identity in caller-provided buffer.
+ * \param[out] buf caller-provided output buffer
+ * \param[in] buf_len size of buf in bytes
* \param[in] mi Mobile Identity buffer containing 3GPP TS 04.08 style MI type and data.
* \param[in] mi_len Length of mi.
- * \return A string like "IMSI-1234567", "TMSI-0x1234ABCD" or "unknown", "TMSI-invalid"...
+ * \return buf
*/
-const char *osmo_mi_name(const uint8_t *mi, uint8_t mi_len)
+char *osmo_mi_name_buf(char *buf, size_t buf_len, const uint8_t *mi, uint8_t mi_len)
{
- static char mi_name[10 + GSM48_MI_SIZE + 1];
uint8_t mi_type;
uint32_t tmsi;
char mi_string[GSM48_MI_SIZE];
@@ -452,8 +464,8 @@ const char *osmo_mi_name(const uint8_t *mi, uint8_t mi_len)
/* Table 10.5.4.3, reverse generate_mid_from_tmsi */
if (mi_len == GSM48_TMSI_LEN && mi[0] == (0xf0 | GSM_MI_TYPE_TMSI)) {
tmsi = osmo_load32be(&mi[1]);
- snprintf(mi_name, sizeof(mi_name), "TMSI-0x%08" PRIX32, tmsi);
- return mi_name;
+ snprintf(buf, buf_len, "TMSI-0x%08" PRIX32, tmsi);
+ return buf;
}
return "TMSI-invalid";
@@ -461,14 +473,25 @@ const char *osmo_mi_name(const uint8_t *mi, uint8_t mi_len)
case GSM_MI_TYPE_IMEI:
case GSM_MI_TYPE_IMEISV:
osmo_bcd2str(mi_string, sizeof(mi_string), mi, 1, (mi_len * 2) - (mi[0] & GSM_MI_ODD ? 0 : 1), true);
- snprintf(mi_name, sizeof(mi_name), "%s-%s", gsm48_mi_type_name(mi_type), mi_string);
- return mi_name;
+ snprintf(buf, buf_len, "%s-%s", gsm48_mi_type_name(mi_type), mi_string);
+ return buf;
default:
return "unknown";
}
}
+/*! Return a human readable representation of a Mobile Identity in static buffer.
+ * \param[in] mi Mobile Identity buffer containing 3GPP TS 04.08 style MI type and data.
+ * \param[in] mi_len Length of mi.
+ * \return A string like "IMSI-1234567", "TMSI-0x1234ABCD" or "unknown", "TMSI-invalid"...
+ */
+const char *osmo_mi_name(const uint8_t *mi, uint8_t mi_len)
+{
+ static char mi_name[10 + GSM48_MI_SIZE + 1];
+ return osmo_mi_name_buf(mi_name, sizeof(mi_name), mi, mi_len);
+}
+
/*! Checks is particular message is cipherable in A/Gb mode according to
* 3GPP TS 24.008 ยง 4.7.1.2
* \param[in] hdr Message header
@@ -1050,16 +1073,17 @@ const struct value_string gsm48_nc_ss_msgtype_names[] = {
{ 0, NULL }
};
-/*! Compose a string naming the message type for given protocol.
+/*! Compose a string naming the message type for given protocol, in a caller-provided buffer.
* If the message type string is known, return the message type name, otherwise
* return "<protocol discriminator name>:<message type in hex>".
+ * \param[out] buf caller-allcated output string buffer
+ * \param[in] buf_len size of buf in bytes
* \param[in] pdisc protocol discriminator like GSM48_PDISC_MM
* \param[in] msg_type message type like GSM48_MT_MM_LOC_UPD_REQUEST
- * \returns statically allocated string or string constant.
+ * \returns buf
*/
-const char *gsm48_pdisc_msgtype_name(uint8_t pdisc, uint8_t msg_type)
+char *gsm48_pdisc_msgtype_name_buf(char *buf, size_t buf_len, uint8_t pdisc, uint8_t msg_type)
{
- static char namebuf[64];
const struct value_string *msgt_names;
switch (pdisc) {
@@ -1081,11 +1105,23 @@ const char *gsm48_pdisc_msgtype_name(uint8_t pdisc, uint8_t msg_type)
}
if (msgt_names)
- return get_value_string(msgt_names, msg_type);
+ snprintf(buf, buf_len, "%s", get_value_string(msgt_names, msg_type));
+ else
+ snprintf(buf, buf_len, "%s:0x%02x", gsm48_pdisc_name(pdisc), msg_type);
+ return buf;
+}
- snprintf(namebuf, sizeof(namebuf), "%s:0x%02x",
- gsm48_pdisc_name(pdisc), msg_type);
- return namebuf;
+/*! Compose a string naming the message type for given protocol, in a static buffer.
+ * If the message type string is known, return the message type name, otherwise
+ * return "<protocol discriminator name>:<message type in hex>".
+ * \param[in] pdisc protocol discriminator like GSM48_PDISC_MM
+ * \param[in] msg_type message type like GSM48_MT_MM_LOC_UPD_REQUEST
+ * \returns statically allocated string or string constant.
+ */
+const char *gsm48_pdisc_msgtype_name(uint8_t pdisc, uint8_t msg_type)
+{
+ static char namebuf[64];
+ return gsm48_pdisc_msgtype_name_buf(namebuf, sizeof(namebuf), pdisc, msg_type);
}
const struct value_string gsm48_reject_value_names[] = {
@@ -1187,9 +1223,8 @@ bool osmo_gsm48_classmark_is_r99(const struct osmo_gsm48_classmark *cm)
* \param[in] cm Classmarks.
* \returns A statically allocated string like "cm1{a5/1=supported} cm2{0x23= A5/2 A5/3} no-cm3"
*/
-const char *osmo_gsm48_classmark_a5_name(const struct osmo_gsm48_classmark *cm)
+char *osmo_gsm48_classmark_a5_name_buf(char *buf, size_t buf_len, const struct osmo_gsm48_classmark *cm)
{
- static char buf[128];
char cm1[42] = "no-cm1";
char cm2[42] = " no-cm2";
char cm3[42] = " no-cm3";
@@ -1212,10 +1247,21 @@ const char *osmo_gsm48_classmark_a5_name(const struct osmo_gsm48_classmark *cm)
cm->classmark3[0] & (1 << 2) ? " A5/6" : "",
cm->classmark3[0] & (1 << 3) ? " A5/7" : "");
- snprintf(buf, sizeof(buf), "%s%s%s", cm1, cm2, cm3);
+ snprintf(buf, buf_len, "%s%s%s", cm1, cm2, cm3);
return buf;
}
+/*! Return a string representation of A5 cipher algorithms indicated by Classmark 1, 2 and 3.
+ * \param[in] cm Classmarks.
+ * \returns A statically allocated string like "cm1{a5/1=supported} cm2{0x23= A5/2 A5/3} no-cm3"
+ */
+const char *osmo_gsm48_classmark_a5_name(const struct osmo_gsm48_classmark *cm)
+{
+ static char buf[128];
+ return osmo_gsm48_classmark_a5_name_buf(buf, sizeof(buf), cm);
+}
+
+
/*! Overwrite dst with the Classmark information present in src.
* Add an new Classmark and overwrite in dst what src has to offer, but where src has no Classmark information, leave
* dst unchanged. (For Classmark 2 and 3, dst will exactly match any non-zero Classmark length from src, hence may end
diff --git a/src/gsm/gsm_utils.c b/src/gsm/gsm_utils.c
index c9c15d57..f34d9ea5 100644
--- a/src/gsm/gsm_utils.c
+++ b/src/gsm/gsm_utils.c
@@ -886,16 +886,21 @@ uint32_t gsm_gsmtime2fn(struct gsm_time *time)
return (51 * ((time->t3 - time->t2 + 26) % 26) + time->t3 + (26 * 51 * time->t1));
}
-char *osmo_dump_gsmtime(const struct gsm_time *tm)
+char *osmo_dump_gsmtime_buf(char *buf, size_t buf_len, const struct gsm_time *tm)
{
- static char buf[64];
-
- snprintf(buf, sizeof(buf), "%06"PRIu32"/%02"PRIu16"/%02"PRIu8"/%02"PRIu8"/%02"PRIu8,
+ snprintf(buf, buf_len, "%06"PRIu32"/%02"PRIu16"/%02"PRIu8"/%02"PRIu8"/%02"PRIu8,
tm->fn, tm->t1, tm->t2, tm->t3, (uint8_t)tm->fn%52);
buf[sizeof(buf)-1] = '\0';
return buf;
}
+char *osmo_dump_gsmtime(const struct gsm_time *tm)
+{
+ static char buf[64];
+ return osmo_dump_gsmtime_buf(buf, sizeof(buf), tm);
+}
+
+
/*! append range1024 encoded data to bit vector
* \param[out] bv Caller-provided output bit-vector
* \param[in] r Input Range1024 sructure */
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 3fadc5a0..a69fb606 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -9,6 +9,7 @@ abis_nm_fail_evt_vrep;
abis_nm_chcomb4pchan;
abis_nm_debugp_foh;
abis_nm_dump_foh;
+abis_nm_dump_foh_buf;
abis_nm_event_type_name;
abis_nm_nack_cause_name;
abis_nm_nack_name;
@@ -225,6 +226,7 @@ gsm0808_speech_codec_type_names;
gsm0808_permitted_speech_names;
gsm0808_chosen_enc_alg_names;
gsm0808_channel_type_name;
+gsm0808_channel_type_name_buf;
gsm0808_lcls_config_names;
gsm0808_lcls_control_names;
gsm0808_lcls_status_names;
@@ -250,7 +252,9 @@ osmo_enc_gcr;
osmo_dec_gcr;
osmo_gcr_eq;
osmo_gcr_dump;
+osmo_gcr_dump_buf;
osmo_lcls_dump;
+osmo_lcls_dump_buf;
gsm0858_rsl_ul_meas_enc;
@@ -345,6 +349,7 @@ gsm48_set_dtx;
gsm48_dtx_mode;
gsm48_mi_type_name;
osmo_mi_name;
+osmo_mi_name_buf;
gsm48_mcc_mnc_to_bcd;
gsm48_mcc_mnc_from_bcd;
gsm48_generate_lai2;
@@ -354,14 +359,21 @@ osmo_bts_feature_name;
osmo_plmn_to_bcd;
osmo_plmn_from_bcd;
osmo_mcc_name;
+osmo_mcc_name_buf;
osmo_mnc_name;
+osmo_mnc_name_buf;
osmo_plmn_name;
+osmo_plmn_name_buf;
osmo_plmn_name2;
osmo_lai_name;
+osmo_lai_name_buf;
osmo_rai_name;
+osmo_rai_name_buf;
osmo_cgi_name;
+osmo_cgi_name_buf;
osmo_cgi_name2;
osmo_gummei_name;
+osmo_gummei_name_buf;
osmo_mnc_from_str;
osmo_mnc_cmp;
osmo_plmn_cmp;
@@ -378,6 +390,7 @@ gsm48_mm_msgtype_names;
gsm48_cc_msgtype_names;
gsm48_cc_cause_names;
gsm48_pdisc_msgtype_name;
+gsm48_pdisc_msgtype_name_buf;
gsm48_reject_value_names;
gsm_7bit_decode;
@@ -403,6 +416,7 @@ gsm_fn_as_gsmtime_str;
gsm_get_octet_len;
gsm_gsmtime2fn;
osmo_dump_gsmtime;
+osmo_dump_gsmtime_buf;
gsm_milenage;
gsm_septet_encode;
@@ -472,6 +486,7 @@ rsl_ipac_eie_tlvdef;
rsl_ccch_conf_to_bs_cc_chans;
rsl_ccch_conf_to_bs_ccch_sdcch_comb;
rsl_chan_nr_str;
+rsl_chan_nr_str_buf;
rsl_dec_chan_nr;
rsl_enc_chan_nr;
rsl_err_name;
@@ -533,7 +548,9 @@ ipa_prepend_header_ext;
ipa_send;
osmo_apn_qualify;
+osmo_apn_qualify_buf;
osmo_apn_qualify_from_imsi;
+osmo_apn_qualify_from_imsi_buf;
osmo_apn_to_str;
osmo_apn_from_str;
@@ -592,6 +609,7 @@ osmo_gsm48_classmark1_is_r99;
osmo_gsm48_classmark2_is_r99;
osmo_gsm48_classmark_supports_a5;
osmo_gsm48_classmark_a5_name;
+osmo_gsm48_classmark_a5_name_buf;
osmo_gsm48_classmark_update;
local: *;
diff --git a/src/gsm/rsl.c b/src/gsm/rsl.c
index e610ebf7..7bc60027 100644
--- a/src/gsm/rsl.c
+++ b/src/gsm/rsl.c
@@ -215,33 +215,47 @@ int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *tim
return 0;
}
-/*! Get human-readable string for RSL channel number */
-const char *rsl_chan_nr_str(uint8_t chan_nr)
+/*! Get human-readable string for RSL channel number, in caller-provided buffer.
+ * \param[out] buf caller-provided output buffer
+ * \param[in] buf_len size of buf in bytes
+ * \param[in] chan_nr channel number to be stringified
+ * \returns buf with string
+ */
+char *rsl_chan_nr_str_buf(char *buf, size_t buf_len, uint8_t chan_nr)
{
- static char str[20];
int ts = chan_nr & 7;
uint8_t cbits = chan_nr >> 3;
if (cbits == 0x01)
- sprintf(str, "TCH/F on TS%d", ts);
+ snprintf(buf, buf_len, "TCH/F on TS%d", ts);
else if ((cbits & 0x1e) == 0x02)
- sprintf(str, "TCH/H(%u) on TS%d", cbits & 0x01, ts);
+ snprintf(buf, buf_len, "TCH/H(%u) on TS%d", cbits & 0x01, ts);
else if ((cbits & 0x1c) == 0x04)
- sprintf(str, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts);
+ snprintf(buf, buf_len, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts);
else if ((cbits & 0x18) == 0x08)
- sprintf(str, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts);
+ snprintf(buf, buf_len, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts);
else if (cbits == 0x10)
- sprintf(str, "BCCH on TS%d", ts);
+ snprintf(buf, buf_len, "BCCH on TS%d", ts);
else if (cbits == 0x11)
- sprintf(str, "RACH on TS%d", ts);
+ snprintf(buf, buf_len, "RACH on TS%d", ts);
else if (cbits == 0x12)
- sprintf(str, "PCH/AGCH on TS%d", ts);
+ snprintf(buf, buf_len, "PCH/AGCH on TS%d", ts);
else if (cbits == 0x18)
- sprintf(str, "PDCH on TS%d", ts);
+ snprintf(buf, buf_len, "PDCH on TS%d", ts);
else
- sprintf(str, "UNKNOWN on TS%d", ts);
+ snprintf(buf, buf_len, "UNKNOWN on TS%d", ts);
+
+ return buf;
+}
- return str;
+/*! Get human-readable string for RSL channel number, in static buffer.
+ * \param[in] chan_nr channel number to be stringified
+ * \returns buf with string
+ */
+const char *rsl_chan_nr_str(uint8_t chan_nr)
+{
+ static char str[20];
+ return rsl_chan_nr_str_buf(str, sizeof(str), chan_nr);
}
static const struct value_string rsl_err_vals[] = {